THIS
NOTE AND THE UNDERLYING SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”).
THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO SUCH
SECURITIES UNDER THE ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.


 


This
Note and the indebtedness evidenced hereby are subordinate in the manner and to the extent set forth in that certain Subordination
Agreement (the “SVB Subordination Agreement”) dated as of JULY 17, 2018 by and BETWEEN BORROWER (AS DEFINED BELOW)
and SILICON VALLEY BANK to the Senior DEBT (as defined in the SVB Subordination Agreement); and the holder of this Note, by its
acceptance hereof, shall be bound by the provisions of the SVB Subordination Agreement.


 


This
Note and the indebtedness evidenced hereby are ALSO subordinate in the manner and to the extent set forth in that certain Subordination
Agreement (the “PFG Subordination Agreement,” AND TOGETHER WITH THE SVB SUBORDINATION AGREEMENT, THE “SUBORDINATION
AGREEMENTS”) dated as of JULY 17, 2018 by and BETWEEN BORROWER and PARTNERS FOR GROWTH IV, L.P. to the Senior DEBT (as defined
in the PFG Subordination Agreement); and the holder of this Note, by its acceptance hereof, shall be bound by the provisions of
the PFG Subordination Agreement.


 


CONVERTIBLE
PROMISSORY NOTE 


 


	July
    17, 2018	U.S.
    $2,625,000.00




 


FOR
VALUE RECEIVED, Cancer Genetics, Inc., a Delaware corporation (“Borrower”),
promises to pay to Iliad Research and Trading, L.P., a Utah limited partnership,
or its successors or assigns (“Lender”), $2,625,000.00 and any interest, fees, charges, and late fees on the
date that is eighteen (18) months after the Purchase Price Date (the “Maturity Date”) in accordance with the
terms set forth herein and to pay interest on the Outstanding Balance at the rate of ten percent (10%) per annum from the Purchase
Price Date until the same is paid in full. This Convertible Promissory Note (this “Note”) is issued and made
effective as of July 17, 2018 (the “Effective Date”). This Note is issued pursuant to that certain Securities
Purchase Agreement dated July 17, 2018, as the same may be amended from time to time, by and between Borrower and Lender (the
“Purchase Agreement”). Certain capitalized terms used herein are defined in Attachment 1 attached hereto
and incorporated herein by this reference.


 


This
Note carries an OID of $100,000.00. In addition, Borrower agrees to pay $25,000.00 to Lender to cover Lender’s legal fees,
accounting costs, due diligence, monitoring and other transaction costs incurred in connection with the purchase and sale of this
Note (the “Transaction Expense Amount”), all of which amount is included in the initial principal balance of
this Note. The purchase price for this Note shall be $2,500,000.00 (the “Purchase Price”), computed as follows:
$2,625,000.00 original principal balance, less the OID, less the Transaction Expense Amount. The Purchase Price shall be payable
by Lender by wire transfer of immediately available funds.


 




    	 



     


    




 


1.
Payment; Prepayment.


 


1.1.
Payment. All payments owing hereunder shall be in lawful money of the United States of America or Conversion Shares (as
defined below), as provided for herein, and delivered to Lender at the address or bank account furnished to Borrower for that
purpose. All payments shall be applied first to (a) costs of collection, if any, then to (b) fees and charges, if any, then to
(c) accrued and unpaid interest, and thereafter, to (d) principal.


 


1.2.
Prepayment. Notwithstanding the foregoing, so long as Borrower has not received a Lender Conversion Notice (as defined
below) or a Redemption Notice (as defined below) from Lender where the applicable Conversion Shares have not yet been delivered,
then Borrower shall have the right to prepay all or any portion of the Outstanding Balance. If Borrower exercises its right to
prepay this Note, Borrower shall make payment to Lender of an amount in cash equal to 110% multiplied by the portion of the Outstanding
Balance Borrower elects to repay if the prepayment is prior to the one year anniversary of the Purchase Price Date or 100% multiplied
by the portion of the Outstanding Balance Borrower elects to repay if the prepayment is on or after the one year anniversary of
the Purchase Price Date..


 


2.
Security. This Note is not secured.


 


3.
Lender Optional Conversion. Lender has the right at any time after the Purchase Price Date until the Outstanding Balance
has been paid in full, at its election, to convert (“Lender Conversion”) all or any part of the Outstanding
Balance into shares (each instance of conversion is referred herein as a “Lender Conversion Shares”) of fully
paid and non-assessable common stock, par value $0.0001 per share (“Common Stock”), of Borrower as per the
following conversion formula: the number of Lender Conversion Shares equals the amount being converted (the “Conversion
Amount”) divided by the Conversion Price (as defined below). Conversion notices in the form attached hereto as Exhibit
A (each, a “Lender Conversion Notice”) may be effectively delivered to Borrower by any method of Lender’s
choice (including but not limited to facsimile, email, mail, overnight courier, or personal delivery), and all Lender Conversions
shall be cashless and not require further payment from Lender. Borrower shall deliver the Lender Conversion Shares from any Lender
Conversion to Lender in accordance with Section 9 below; except that notwithstanding any provision of Section 9, it is understood
that any issuance of Conversion Shares prior to the date six (6) months after the Purchase Price Date shall be in certificated
form and that the certificates issued to Lender in such period shall bear the Company’s usual securities law restrictive
legend and such shares may not be transferred unless and until the holding period requirements of Rule 144 have been satisfied.


 


4.
Defaults and Remedies.


 


4.1.
Defaults. The following are events of default under this Note (each, an “Event of Default”): (a) Borrower
fails to pay any principal, interest, fees, charges, or any other amount when due and payable hereunder; (b) Borrower fails to
deliver any Lender Conversion Shares in accordance with the terms hereof; (c) Borrower fails to deliver any Redemption Conversion
Shares (as defined below) in accordance with the terms hereof; (d) a receiver, trustee or other similar official shall be appointed
over Borrower or a material part of its assets and such appointment shall remain uncontested for twenty (20) days or shall not
be dismissed or discharged within sixty (60) days; (e) Borrower becomes insolvent or generally fails to pay, or admits in writing
its inability to pay, its debts as they become due, subject to applicable grace periods, if any, or waivers; (f) Borrower makes
a general assignment for the benefit of creditors; (g) Borrower files a petition for relief under any bankruptcy, insolvency or
similar law (domestic or foreign); (h) an involuntary bankruptcy proceeding is commenced or filed against Borrower; (i) Borrower
or any pledgor, trustor, or guarantor of this Note defaults or otherwise fails to observe or perform (after giving effect to any
grace period) any covenant, obligation, condition or agreement of Borrower or such pledgor, trustor, or guarantor contained herein
or in any other Transaction Document (as defined in the Purchase Agreement), other than those specifically set forth in this Section
4.1; (j) any representation, warranty or other statement made or furnished by or on behalf of Borrower or any pledgor, trustor,
or guarantor of this Note to Lender herein, in any Transaction Document, or otherwise in connection with the issuance of this
Note is false, incorrect, incomplete or misleading in any material respect when made or furnished; (k) the occurrence of a Fundamental
Transaction without Lender’s prior written consent unless either (1) 100% of the Outstanding Balance due on this Note is
paid in full in connection with such Fundamental Transaction or (2) shares of the Borrower’s common stock are still traded
on the NYSE, Nasdaq, OTCQX or OTCQB following consummation of the such Fundamental Transaction; (l) Borrower fails to maintain
the Share Reserve as required under the Purchase Agreement; (m) Borrower effectuates a reverse split of its Common Stock without
twenty (20) Trading Days prior written notice to Lender other than in connection with a Fundamental Transaction; (n) any money
judgment, writ or similar process is entered or filed against Borrower or any subsidiary of Borrower or any of its property or
other assets for more than $1,000,000.00, and shall remain unvacated, unbonded or unstayed for a period of twenty (20) calendar
days unless otherwise consented to by Lender; or (o) Borrower, any affiliate of Borrower, or any pledgor, trustor, or guarantor
of this Note breaches any material covenant or other term or condition contained in any Other Agreements (after giving effect
to any grace periods therein or any waivers). Notwithstanding the foregoing, the occurrence of any event specified in Section
4.1(i) – (o) shall not be considered an Event of Default hereunder if such event is cured within fifteen (15) days of the
occurrence of such event.


 




    	2



     


    




 


4.2.
Remedies. At any time and from time to time after Lender becomes aware of the occurrence of any Event of Default, Lender
may accelerate this Note by written notice to Borrower, with the Outstanding Balance becoming immediately due and payable in cash
at the Mandatory Default Amount. Notwithstanding the foregoing, at any time following the occurrence of any Event of Default,
Lender may, at its option, elect to increase the Outstanding Balance by applying the Default Effect (subject to the limitation
set forth below) via written notice to Borrower without accelerating the Outstanding Balance, in which event the Outstanding Balance
shall be increased as of the date of the occurrence of the applicable Event of Default pursuant to the Default Effect, but the
Outstanding Balance shall not be immediately due and payable unless so declared by Lender (for the avoidance of doubt, if Lender
elects to apply the Default Effect pursuant to this sentence, it shall reserve the right to declare the Outstanding Balance immediately
due and payable at any time and no such election by Lender shall be deemed to be a waiver of its right to declare the Outstanding
Balance immediately due and payable as set forth herein unless otherwise agreed to by Lender in writing). Notwithstanding the
foregoing, upon the occurrence of any Event of Default described in clauses (d), (e), (f), (g) or (h) of Section 4.1, the Outstanding
Balance as of the date of acceleration shall become immediately and automatically due and payable in cash at the Mandatory Default
Amount, without any written notice required by Lender. At any time following the occurrence of any Event of Default, upon written
notice given by Lender to Borrower, interest shall accrue on the Outstanding Balance beginning on the date the applicable Event
of Default occurred at an interest rate equal to the lesser of 22% per annum or the maximum rate permitted under applicable law
(“Default Interest”). For the avoidance of doubt, Lender may continue making Lender Conversions and Redemption
Conversions (as defined below) at any time following an Event of Default until such time as the Outstanding Balance is paid in
full. In connection with acceleration described herein, Lender need not provide, and Borrower hereby waives, any presentment,
demand, protest or other notice of any kind, and Lender may immediately and without expiration of any grace period enforce any
and all of its rights and remedies hereunder and all other remedies available to it under applicable law. Such acceleration may
be rescinded and annulled by Lender at any time prior to payment hereunder and Lender shall have all rights as a holder of the
Note until such time, if any, as Lender receives full payment pursuant to this Section 4.2. No such rescission or annulment shall
affect any subsequent Event of Default or impair any right consequent thereon. Nothing herein shall limit Lender’s right
to pursue in one or more arbitrations any other remedies available to it at law or in equity including, without limitation, a
decree of specific performance and/or injunctive relief with respect to Borrower’s failure to timely deliver Conversion
Shares upon Conversion of the Note as required pursuant to the terms hereof or to prohibit Borrower from issuing any common or
preferred stock to any third party until the Outstanding Balance has been paid in full.


 




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5.
Unconditional Obligation; No Offset. Borrower acknowledges that this Note is an unconditional, valid, binding and enforceable
obligation of Borrower not subject to offset, deduction or counterclaim of any kind. Borrower hereby waives any rights of offset
it now has or may have hereafter against Lender, its successors and assigns, and agrees to make the payments or Conversions called
for herein in accordance with the terms of this Note.


 


6.
Waiver. No waiver of any provision of this Note shall be effective unless it is in the form of a writing signed by the
party granting the waiver. No waiver of any provision or consent to any prohibited action shall constitute a waiver of any other
provision or consent to any other prohibited action, whether or not similar. No waiver or consent shall constitute a continuing
waiver or consent or commit a party to provide a waiver or consent in the future except to the extent specifically set forth in
writing.


 


7.
Adjustment upon Subdivision or Combination of Common Stock. Without limiting any provision hereof, if Borrower at any time
on or after the Effective Date subdivides (by any stock split, stock dividend, recapitalization or otherwise) one or more classes
of its outstanding shares of Common Stock into a greater number of shares, the Conversion Price and the Minimum Share Price in
effect immediately prior to such subdivision will be proportionately reduced. Without limiting any provision hereof, if Borrower
at any time on or after the Effective Date combines (by combination, reverse stock split or otherwise) one or more classes of
its outstanding shares of Common Stock into a smaller number of shares, the Conversion Price and the Minimum Share Price in effect
immediately prior to such combination will be proportionately increased. Any adjustment pursuant to this Section 7 shall become
effective immediately after the effective date of such subdivision or combination. If any event requiring an adjustment under
this Section 7 occurs during the period that a Conversion Price and the Minimum Share Price is calculated hereunder, then the
calculation of such Conversion Price and the Minimum Share Price shall be adjusted appropriately to reflect such event.


 


8.
Borrower Redemptions.


 


8.1.
Redemption Conversions. Beginning on the date that is six (6) months after the Purchase Price Date, Lender shall have the
right, exercisable at any time in its sole and absolute discretion, to redeem all or any portion of the Note (such amount, the
“Redemption Amount”) up to the Maximum Monthly Redemption Amount by providing Borrower with a notice substantially
in the form attached hereto as Exhibit B (each, a “Redemption Notice”, and each date on which Lender
delivers a Redemption Notice, a “Redemption Date”). For the avoidance of doubt, Lender may submit to Borrower
one (1) or more Redemption Notices in any given calendar month so long as the aggregate Redemption Amounts do not exceed the Maximum
Monthly Redemption Amount. Payments of each Redemption Amount may be made at the Borrower’s option pursuant to section 8.2
below (a) in cash, or (b) by converting such Redemption Amount into shares of Common Stock (“Redemption Conversion Shares”,
and together with the Lender Conversion Shares, the “Conversion Shares”) in accordance with this Section 8.1
(each, a “Redemption Conversion”) per the following formula: the number of Redemption Conversion Shares equals
the portion of the applicable Redemption Amount being converted divided by the Conversion Price, or (c) by any combination of
the foregoing, so long as the cash is delivered to Lender on the fifth (5th) Trading Day immediately following the
applicable Redemption Date and the Redemption Conversion Shares are delivered to Lender on or before the applicable Delivery Date
(as defined below). Notwithstanding the foregoing, Borrower will not be entitled to elect a Redemption Conversion with respect
to any portion of any applicable Redemption Amount and shall be required to pay the entire amount of such Redemption Amount in
cash, if on the applicable Redemption Date (y) there is an Equity Conditions Failure, and such failure is not waived in writing
by Lender; or (z) the VWAP on the Trading Day immediately preceding the Redemption Date is below the Minimum Share Price. Notwithstanding
that failure to repay this Note in full by the Maturity Date is an Event of Default, the Redemption Dates shall continue after
the Maturity Date pursuant to this Section 8.1 until the Outstanding Balance is repaid in full, provided that the aggregate Redemption
Amounts in any given calendar month following an Event of Default may exceed the Maximum Monthly Redemption Amount. In the event
Borrower is obligated to pay any Redemption Amount in cash pursuant to this Section 8.1, Borrower covenants and agrees that it
will obtain any consents required under the Subordination Agreements to make such payments in cash. Borrower’s failure for
any reason to timely pay any Redemption Amount that must be paid in cash, including as a result of its failure to obtain the requisite
consents under the Subordination Agreements, shall be considered an Event of Default hereunder.


 




    	4



     


    




 


8.2.
Allocation of Redemption Amounts. Following its receipt of a Redemption Notice, Borrower may either ratify Lender’s
proposed allocation between stock and cash in the applicable Redemption Notice or elect to change the allocation by written notice
to Lender by email or fax within one (1) Trading Day of its receipt of such Redemption Notice, so long as the sum of the cash
payments and the amount of Redemption Conversions equal the applicable Redemption Amount. If Borrower fails to notify Lender of
its election to change the allocation prior to the deadline set forth in the previous sentence, it shall be deemed to have ratified
and accepted the allocation set forth in the applicable Redemption Notice prepared by Lender. Borrower acknowledges and agrees
that the amounts and calculations set forth thereon are subject to correction or adjustment because of error, mistake, or any
adjustment resulting from an Event of Default or other adjustment permitted under the Transaction Documents (an “Adjustment”).
Furthermore, no error or mistake in the preparation of such notices, or failure to apply any Adjustment that could have been applied
prior to the preparation of a Redemption Notice may be deemed a waiver of Lender’s right to enforce the terms of any Note,
even if such error, mistake, or failure to include an Adjustment arises from Lender’s own calculation. Borrower shall deliver
the Redemption Conversion Shares from any Redemption Conversion to Lender in accordance with Section 9 below on or before each
applicable Delivery Date. If Borrower elects to pay a Redemption Amount in cash, such payment must be delivered on the fifth Trading
Day immediately following the Redemption Date


 


8.3.
Payment at Maturity. Borrower shall also be entitled to elect a Redemption Conversion with respect to the final payment
due at the Maturity Date unless (a) there is an Equity Condition Failure and such failure is not waived in writing by Lender or
(b) the VWAP on the Trading Day immediately preceding the Maturity Date is below the Minimum Share Price and such minimum is not
waived by the Lender. Notwithstanding the foregoing, unless approved by Lender in its sole discretion, the amount Borrower may
elect to pay in Redemption Conversion Shares as part of such final payment may not exceed the lesser of (y) the Maximum Monthly
Redemption Amount and (z) the average monthly dollar trading volume for the three (3) months immediately preceding the Maturity
Date, any portion of the Outstanding Balance exceeding such amount must be paid in cash.


 


9.
Method of Conversion Share Delivery. On or before the close of business on the fifth (5th) Trading Day following
each Redemption Date or the fifth (5th) Trading Day following the date of delivery of a Lender Conversion Notice, as
applicable (the “Delivery Date”), Borrower shall, provided it is DWAC Eligible at such time, deliver or cause
its transfer agent to deliver the applicable Conversion Shares electronically via DWAC to the account designated by Lender in
the applicable Lender Conversion Notice or Redemption Notice. If Borrower is not DWAC Eligible, it shall deliver to Lender or
its broker (as designated in the Lender Conversion Notice or Redemption Notice, as applicable), via reputable overnight courier,
a certificate representing the number of shares of Common Stock equal to the number of Conversion Shares to which Lender shall
be entitled, registered in the name of Lender or its designee. For the avoidance of doubt, Borrower has not met its obligation
to deliver Conversion Shares by the Delivery Date unless Lender or its broker, as applicable, has actually received the certificate
representing the applicable Conversion Shares no later than the close of business on the relevant Delivery Date pursuant to the
terms set forth above. Moreover, and notwithstanding anything to the contrary herein or in any other Transaction Document, in
the event Borrower or its transfer agent refuses to deliver any Conversion Shares to Lender on grounds that such issuance is in
violation of Rule 144 under the Securities Act of 1933, as amended (“Rule 144”), Borrower shall deliver or
cause its transfer agent to deliver the applicable Conversion Shares to Lender with a restricted securities legend, but otherwise
in accordance with the provisions of this Section 9. In conjunction therewith, Borrower will also deliver to Lender a written
explanation from its counsel or its transfer agent’s counsel opining as to why the issuance of the applicable Conversion
Shares violates Rule 144. Notwithstanding the foregoing, it is understood that no sales of Conversion Shares under Rule 144 prior
to the one year anniversary of the Purchase Price Date can only be made if the Borrower has satisfied the current public information
requirements of Rule 144. Accordingly, Lender covenants and agrees that it will not sell any shares in violation of Rule 144.


 




    	5



     


    




 


10.
Conversion Delays. If Borrower fails to deliver Conversion Shares in accordance with the timeframe stated in Section 9,
Lender may at any time prior to receiving the applicable Conversion Shares rescind in whole or in part such Conversion, with a
corresponding increase to the Outstanding Balance (any returned amount will tack back to the Purchase Price Date for purposes
of determining the holding period under Rule 144). In addition, for each Conversion, in the event that Conversion Shares are not
delivered by the fifth (5th) Trading Day, a late fee equal to 1% of the applicable Conversion Share Value rounded to
the nearest multiple of $100.00 but with a floor of $500.00 per day (but in any event the cumulative amount of such late fees
for each Conversion shall not exceed 100% of the applicable Conversion Share Value) will be assessed for each day after the fifth
(5th) Trading Day until Conversion Share delivery is made; and such late fee will be added to the Outstanding Balance
(such fees, the “Conversion Delay Late Fees”).


 


11.
Ownership Limitation. Notwithstanding anything to the contrary contained in this Note or the other Transaction Documents,
if at any time Lender shall or would be issued shares of Common Stock under any of the Transaction Documents, but such issuance
would cause Lender (together with its affiliates) to beneficially own a number of shares exceeding 9.99% of the number of shares
of Common Stock outstanding on such date (including for such purpose the shares of Common Stock issuable upon such issuance) (the
“Maximum Percentage”), then Borrower must not issue to Lender shares of Common Stock which would exceed the
Maximum Percentage. For purposes of this section, beneficial ownership of Common Stock will be determined pursuant to Section
13(d) of the 1934 Act. By written notice to Borrower, Lender may increase or waive the Maximum Percentage as to itself but any
such waiver will not be effective until the 61st day after delivery thereof. The foregoing 61-day notice requirement is enforceable,
unconditional and non-waivable and shall apply to all affiliates and assigns of Lender. Lender shall be solely responsible for
notifying Borrower of the number of shares it beneficially owns so as to permit Lender to comply with this section.


 


12.
Issuance Cap. Notwithstanding anything to the contrary contained in this Note or the other Transaction Documents, Borrower
and Lender agree that the total cumulative number of shares of Common Stock issued to Lender hereunder together with all other
Transaction Documents may not exceed the requirements of Nasdaq Listing Rule 5635(d) (“Nasdaq 19.99% Cap”),
except that such limitation will not apply following Approval (defined below). If the number of shares of Common Stock issued
to Investor reaches the Nasdaq 19.99% Cap, so as not to violate the 20% limit established in Listing Rule 5635(d), Borrower will
use reasonable commercial efforts to obtain stockholder approval of the Note and the issuance of additional Conversion Shares,
if necessary, in accordance with the requirements of Nasdaq Listing Rule 5635(d) (the “Approval”). If the Borrower
is unable to obtain such Approval, any remaining Outstanding Balance of this Note must be repaid in cash.


 


13.
Opinion of Counsel. In the event that an opinion of counsel is needed for any matter related to this Note, Lender has the
right to have any such opinion provided by its counsel.


 


14.
Governing Law; Venue. This Note shall be construed and enforced in accordance with, and all questions concerning the construction,
validity, interpretation and performance of this Note shall be governed by, the internal laws of the State of Utah, without giving
effect to any choice of law or conflict of law provision or rule (whether of the State of Utah or any other jurisdiction) that
would cause the application of the laws of any jurisdiction other than the State of Utah. The provisions set forth in the Purchase
Agreement to determine the proper venue for any disputes are incorporated herein by this reference.


 




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15.
Resolution of Disputes.


 


15.1.
Arbitration of Disputes. By its issuance or acceptance of this Note, as applicable, each party agrees to be bound by the
Arbitration Provisions (as defined in the Purchase Agreement) set forth as an exhibit to the Purchase Agreement.


 


15.2.
Calculation Disputes. Notwithstanding the Arbitration Provisions, in the case of a dispute as to any Calculation (as defined
in the Purchase Agreement), such dispute will be resolved in the manner set forth in the Purchase Agreement.


 


16.
Cancellation. After repayment or conversion of the entire Outstanding Balance, this Note shall be deemed paid in full,
shall automatically be deemed canceled, and shall not be reissued.


 


17.
Amendments. The prior written consent of both parties hereto shall be required for any change or amendment to this Note.
Any amendment or modification of this Note is further subject to the restrictions and conditions of the Subordination Agreements,
as may be amended.


 


18.
Assignments. Borrower may not assign this Note without the prior written consent of Lender. This Note and any shares of
Common Stock issued upon conversion of this Note may be offered, sold, assigned or transferred by Lender without the consent of
Borrower, so long as such transfer is in accordance with applicable federal and state securities laws and does not affect the
ability of the Borrower to issue Conversion Shares in repayment of this Note in accordance with the terms hereof and applicable
federal and state securities laws.


 


19.
Notices. Whenever notice is required to be given under this Note, unless otherwise provided herein, such notice shall be
given in accordance with the subsection of the Purchase Agreement titled “Notices.”


 


20.
Liquidated Damages. Lender and Borrower agree that in the event Borrower fails to comply with any of the terms or provisions
of this Note, Lender’s damages would be uncertain and difficult (if not impossible) to accurately estimate because of the
parties’ inability to predict future interest rates, future share prices, future trading volumes and other relevant factors.
Accordingly, Lender and Borrower agree that any fees, balance adjustments, Default Interest or other charges assessed under this
Note are not penalties but instead are intended by the parties to be, and shall be deemed, liquidated damages (under Lender’s
and Borrower’s expectations that any such liquidated damages will tack back to the Purchase Price Date for purposes of determining
the holding period under Rule 144).


 


21.
Severability. If any part of this Note is construed to be in violation of any law, such part shall be modified to achieve
the objective of Borrower and Lender to the fullest extent permitted by law and the balance of this Note shall remain in full
force and effect.


 


[Remainder
of page intentionally left blank; signature page follows]


 




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IN
WITNESS WHEREOF, Borrower has caused this Note to be duly executed as of the Effective Date.


 


	 	BORROWER:
	 	 	 
	 	Cancer
    Genetics, Inc.
	 	 	 
	 	By:
    	/s/
    John A. Roberts 
	 	Name:
    	John
    A. Roberts 
	 	Title:
    	Chief
    Executive Officer 


 


ACKNOWLEDGED,
ACCEPTED AND AGREED:


 





LENDER:


 


Iliad
Research and Trading, L.P.


 


	By:	Iliad
    Management, LLC, its General Partner	 
	 	 	 
	By:	Fife
    Trading, Inc., its Manager	 
	 	 	 
	By:	/s/
    John M. Fife	 
	 	John
    M. Fife, President 	 


 


[Signature
Page to Convertible Promissory Note]


 




    	 



     


    

 





ATTACHMENT
1


DEFINITIONS


 


For
purposes of this Note, the following terms shall have the following meanings:


 


A1.
“Bloomberg” means Bloomberg L.P. (or if that service is not then reporting the relevant information regarding
the Common Stock, a comparable reporting service of national reputation selected by Lender and reasonably satisfactory to Borrower).


 


A2.
“Closing Trade Price” means the last closing trade price for the Common Stock on its principal market, as reported
by Bloomberg, or, if its principal market begins to operate on an extended hours basis and does not designate the closing trade
price then the last bid price or last trade price, respectively, of the Common Stock prior to 4:00:00 p.m., New York time, as
reported by Bloomberg, or, if its principal market is not the principal securities exchange or trading market for the Common Stock,
the last closing bid price or last trade price, respectively, of the Common Stock on the principal securities exchange or trading
market where the Common Stock is listed or traded as reported by Bloomberg, or if the foregoing do not apply, the last closing
bid price or last trade price, respectively, of the Common Stock in the over-the-counter market on the electronic bulletin board
for the Common Stock as reported by Bloomberg, or, if no closing bid price or last trade price, respectively, is reported for
the Common Stock by Bloomberg, the average of the bid prices, or the ask prices, respectively, of any market makers for the Common
Stock as reported by OTC Markets Group, Inc., and any successor thereto. If the Closing Trade Price cannot be calculated for the
Common Stock on a particular date on any of the foregoing bases, the Closing Trade Price of the Common Stock on such date shall
be the fair market value as mutually determined by Lender and Borrower. If Lender and Borrower are unable to agree upon the fair
market value of the Common Stock, then such dispute shall be resolved in accordance with the procedures in Section 15.2. All such
determinations shall be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction
during such period.


 


A3.
“Conversion” means a Lender Conversion or a Redemption Conversion.


 


A4.
“Conversion Price” means $0.80 per share of Common Stock.


 


A5.
“Conversion Share Value” means the product of the number of Conversion Shares deliverable pursuant to any Conversion
multiplied by the Closing Trade Price of the Common Stock on the Delivery Date for such Conversion.


 


A6.
“Default Effect” means multiplying the Outstanding Balance as of the date the applicable Event of Default occurred
by 15% and then adding the resulting product to the Outstanding Balance as of the date the applicable Event of Default occurred,
with the sum of the foregoing then becoming the Outstanding Balance under this Note as of the date the applicable Event of Default
occurred.


 


A7.
“DTC” means the Depository Trust Company or any successor thereto.


 


A8.
“DTC Eligible” means, with respect to the Common Stock, that such Common Stock is eligible to be deposited
in certificate form at the DTC, cleared and converted into electronic shares by the DTC and held in the name of the clearing firm
servicing Lender’s brokerage firm for the benefit of Lender.


 


A9.
“DTC/FAST Program” means the DTC’s Fast Automated Securities Transfer program.


 


A10.
“DWAC” means the DTC’s Deposit/Withdrawal at Custodian system.


 


A11.
“DWAC Eligible” means that (a) Borrower’s Common Stock is eligible at DTC for full services pursuant
to DTC’s operational arrangements, including without limitation transfer through DTC’s DWAC system; (b) Borrower has
been approved (without revocation) by DTC’s underwriting department; (c) Borrower’s transfer agent is approved as
an agent in the DTC/FAST Program; (d) the Conversion Shares are otherwise eligible for delivery via DWAC; (e) Borrower has previously
delivered all Conversion Shares to Lender via DWAC; and (f) Borrower’s transfer agent does not have a policy prohibiting
or limiting delivery of the Conversion Shares via DWAC.


 


Exhibit
A to Convertible Promissory Note, Page 1


 




    	 



     


    

 





A12.
“Equity Conditions Failure” means that any of the following conditions has not been satisfied during any applicable
Equity Conditions Measuring Period (as defined below) and on each Redemption Date: (a) with respect to the applicable date of
determination all of the Conversion Shares would be freely tradable under Rule 144 or without the need for registration under
any applicable federal or state securities laws (in each case, disregarding any limitation on conversion of this Note); (b) on
each day during the period beginning one month prior to the applicable date of determination and ending on and including the applicable
date of determination (the “Equity Conditions Measuring Period”), the Common Stock is listed or designated
for quotation (as applicable) on any of NYSE, NASDAQ, OTCQX, or OTCQB (each, an “Eligible Market”) and shall
not have been suspended from trading on any such Eligible Market (other than suspensions of not more than two (2) Trading Days
and occurring prior to the applicable date of determination due to business announcements by Borrower); (c) on each day during
the Equity Conditions Measuring Period, Borrower shall have delivered all shares of Common Stock issuable upon conversion of this
Note on a timely basis as set forth in Section 11 hereof and all other shares of capital stock required to be delivered by Borrower
on a timely basis as set forth in the other Transaction Documents; (d) any shares of Common Stock to be issued in connection with
the event requiring determination may be issued in full without violating Section 11 hereof (Lender acknowledges that Borrower
shall be entitled to assume that this condition has been met for all purposes hereunder absent written notice from Lender; and
the parties agree that any securities of the Borrower beneficially acquired by Lender or its affiliates after the date hereof
shall not be counted in determining whether there is a violation of Section 11); (e) any shares of Common Stock to be issued in
connection with the event requiring determination may be issued in full without violating the rules or regulations of the Eligible
Market on which the Common Stock is then listed or designated for quotation (as applicable); (f) Borrower shall have no knowledge
of any fact that would reasonably be expected to cause any of the Conversion Shares to not be freely tradable without the need
for registration under any applicable state securities laws (in each case, disregarding any limitation on conversion of this Note);
(h) on each day during the Equity Conditions Measuring Period, Borrower otherwise shall have been in material compliance with
each, and shall not have breached any, term, provision, covenant, representation or warranty of any Transaction Document; (i)
on each day during the Equity Conditions Measuring Period, there shall not have occurred an Event of Default or an event that
with the passage of time or giving of notice would constitute an Event of Default; and (k) the average and median daily dollar
volume of the Common Stock on its principal market for the previous forty (40) Trading Days shall be greater than $50,000.00.


 


A13.
“Fundamental Transaction” means that (a) (i) Borrower or any of its subsidiaries shall, directly or indirectly,
in one or more related transactions, consolidate or merge with or into (whether or not Borrower or any of its subsidiaries is
the surviving corporation) any other person or entity, or (ii) Borrower or any of its subsidiaries shall, directly or indirectly,
in one or more related transactions, sell, lease, license, assign, transfer, convey or otherwise dispose of all or substantially
all of its respective properties or assets to any other person or entity, or (iii) Borrower or any of its subsidiaries shall,
directly or indirectly, in one or more related transactions, allow any other person or entity to make a purchase, tender or exchange
offer that is accepted by the holders of more than 50% of the outstanding shares of voting stock of Borrower (not including any
shares of voting stock of Borrower held by the person or persons making or party to, or associated or affiliated with the persons
or entities making or party to, such purchase, tender or exchange offer), or (iv) Borrower or any of its subsidiaries shall, directly
or indirectly, in one or more related transactions, consummate a stock or share purchase agreement or other business combination
(including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with any other person or
entity whereby such other person or entity acquires more than 50% of the outstanding shares of voting stock of Borrower (not including
any shares of voting stock of Borrower held by the other persons or entities making or party to, or associated or affiliated with
the other persons or entities making or party to, such stock or share purchase agreement or other business combination), or (b)
any “person” or “group” (as these terms are used for purposes of Sections 13(d) and 14(d) of the 1934
Act and the rules and regulations promulgated thereunder) is or shall become the “beneficial owner” (as defined in
Rule 13d-3 under the 1934 Act), directly or indirectly, of 50% of the aggregate ordinary voting power represented by issued and
outstanding voting stock of Borrower.


 


A14.
“Mandatory Default Amount” means the Outstanding Balance following the application of the Default Effect.


 


A15.
“Market Capitalization” means a number equal to (a) the average VWAP of the Common Stock for the immediately
preceding fifteen (15) Trading Days, multiplied by (b) the aggregate number of outstanding shares of Common Stock as reported
on Borrower’s most recently filed Form 10-Q or Form 10-K.


 


A16.
“Maximum Monthly Redemption Amount” means $650,000.00, which is the maximum aggregate Redemption Amount that
may be redeemed in any calendar month.


 


A17.
“Minimum Share Price” means $1.00 per share of Common Stock.


 


A18.
“OID” means an original issue discount.


 


Exhibit
A to Convertible Promissory Note, Page 2


 




    	 



     


    




 


A19.
“Other Agreements” means, collectively, (a) all existing and future agreements and instruments between, among
or by Borrower (or an affiliate), on the one hand, and Lender (or an affiliate), on the other hand, and (b) any financing agreement
or a material agreement that affects Borrower’s ongoing business operations.


 


A20.
“Outstanding Balance” means as of any date of determination, the Purchase Price, as reduced or increased, as
the case may be, pursuant to the terms hereof for payment, Conversion, offset, or otherwise, plus the OID, the Transaction Expense
Amount, accrued but unpaid interest, collection and enforcements costs (including attorneys’ fees) incurred by Lender, transfer,
stamp, issuance and similar taxes and fees related to Conversions, and any other fees or charges (including without limitation
Conversion Delay Late Fees) incurred under this Note.


 


A21.
“Purchase Price Date” means the date the Purchase Price is delivered by Lender to Borrower.


 


A22.
“Trading Day” means any day on which the New York Stock Exchange is open for trading.


 


A23.
“VWAP” means the five (5) day volume weighted average price of the Common Stock on the principal market for
a particular Trading Day or set of Trading Days, as the case may be, as reported by Bloomberg.


 


[Remainder
of page intentionally left blank]


 


Exhibit
A to Convertible Promissory Note, Page 3


 




    	 



     


    

 


EXHIBIT
A


 


Iliad
Research and Trading, L.P.


303
East Wacker Drive, Suite 1040


Chicago,
Illinois 60601


 


	Cancer
    Genetics, Inc.	Date:
    __________________ 


Attn:
Jay Roberts, CEO


201
Route 17 North, 2nd Floor


Rutherford,
New Jersey 07070


 


LENDER
CONVERSION NOTICE


 


The
above-captioned Lender hereby gives notice to Cancer Genetics, Inc., a Delaware corporation (the “Borrower”),
pursuant to that certain Convertible Promissory Note made by Borrower in favor of Lender on July 17, 2018 (the “Note”),
that Lender elects to convert the portion of the Note balance set forth below into fully paid and non-assessable shares of Common
Stock of Borrower as of the date of conversion specified below. Said conversion shall be based on the Lender Conversion Price
set forth below. In the event of a conflict between this Lender Conversion Notice and the Note, the Note shall govern, or, in
the alternative, at the election of Lender in its sole discretion, Lender may provide a new form of Lender Conversion Notice to
conform to the Note. Lender represents and warrants to the Borrower that it is an accredited investor as of the date hereof and
that it will sell the Lender Conversion Shares below in accordance with Rule 144 and any other applicable securities laws. Capitalized
terms used in this notice without definition shall have the meanings given to them in the Note.


 


	 	A.
    	Date
    of Conversion: ____________
	 	B.
    	Lender
    Conversion #: ____________
	 	C.	Conversion
    Amount: ____________
	 	D.
    	Lender
    Conversion Price: $0.80 
	 	E.	Lender
    Conversion Shares: _______________ (C divided by D)
	 	F.
    	Remaining
    Outstanding Balance of Note: ____________* 
	 	G.
    	Shares
    of Borrower Common Stock Beneficially Owned By Lender __________________**


 


*
Subject to adjustments for corrections, defaults, interest and other adjustments permitted by the Transaction Documents (as defined
in the Purchase Agreement), the terms of which shall control in the event of any dispute between the terms of this Lender Conversion
Notice and such Transaction Documents.


 


**
Determined as of close of trading on the Trading Day immediately preceding the date of this Lender Conversion Notice.


 


Please
transfer the Lender Conversion Shares electronically (via DWAC) to the following account:


 


	Broker:
    ________________________________ 	Address:
    	 
	DTC#:
    ________________________________	 	 
	Account
    #: _____________________________	 	 
	Account
    Name: _________________________	 	 


 


To
the extent the Lender Conversion Shares are to be issued prior to January 16, 2019 or otherwise are not able to be delivered to
Lender electronically via the DWAC system, deliver all such certificated shares (with securities law restrictive legends if issued
prior to January 16, 2019) to Lender via reputable overnight courier after receipt of this Lender Conversion Notice (by facsimile
transmission or otherwise) to:


 


_____________________________________


_____________________________________


_____________________________________


 


Exhibit
A to Convertible Promissory Note, Page 1


 




    	 



     


    

 





Sincerely,


 


Lender:


 


Iliad
Research and Trading, L.P.


 


	By:	Iliad
    Management, LLC, its General Partner	 
	 	 	 
	By:	Fife
    Trading, Inc., its Manager	 
	 	 	 
	By:
    	 	 
	 	John
    M. Fife, President 	 


 


Exhibit
A to Convertible Promissory Note, Page 2


 




    	 



     


    

 


EXHIBIT
B


 


Iliad
Research and Trading, L.P.


303
East Wacker Drive, Suite 1040


Chicago,
Illinois 60601


 


	Cancer
    Genetics, Inc. 	Date:
    __________________


Attn:
Jay Roberts, CEO


201
Route 17 North, 2nd Floor


Rutherford,
New Jersey 07070


 


REDEMPTION
NOTICE


 


The
above-captioned Lender hereby gives notice to Cancer Genetics, Inc., a Delaware corporation (the “Borrower”),
pursuant to that certain Convertible Promissory Note made by Borrower in favor of Lender on July 17, 2018 (the “Note”),
that Lender elects to redeem a portion of the Note in Redemption Conversion Shares or in cash as set forth below. In the event
of a conflict between this Redemption Notice and the Note, the Note shall govern, or, in the alternative, at the election of Lender
in its sole discretion, Lender may provide a new form of Redemption Notice to conform to the Note. Lender represents and warrants
to the Borrower that it is an accredited investor as of the date hereof and that it will sell the Redemption Conversion Shares
below in accordance with Rule 144 and any other applicable securities laws. Capitalized terms used in this notice without definition
shall have the meanings given to them in the Note.


 


REDEMPTION
INFORMATION 


 


	 	A.	Redemption
    Date: ____________, 201_
	 	B.
    	Redemption
    Amount: ____________
	 	C.
    	Portion
    of Redemption Amount to be Paid in Cash: ____________
	 	D.
    	Portion
    of Redemption Amount to be Converted into Common Stock: ____________ (B minus C if E is greater than or equal to $1.00)
	 	E.
    	Closing
    Trade Price on Redemption Date: __________
	 	F.
    	Redemption
    Conversion Price: $0.80
	 	G.
    	Redemption
    Conversion Shares: _______________ (D divided by E)
	 	H.
    	Remaining
    Outstanding Balance of Note: ____________ * 
	 	I.
    	Shares
    of Borrower Common Stock Beneficially Owned By Lender __________________**


 


*
Subject to adjustments for corrections, defaults, interest and other adjustments permitted by the Transaction Documents (as defined
in the Purchase Agreement), the terms of which shall control in the event of any dispute between the terms of this Redemption
Notice and such Transaction Documents.


 


**
Determined as of close of trading on the Trading Day immediately preceding the date of this Redemption Notice.


 


2.
EQUITY CONDITIONS CERTIFICATION (Section to be completed by Borrower)


 


	 	A.
    	Market
    Capitalization:________________


 


(Check
One)


 


	 	B.
    	_________
    Borrower herby certifies that no Equity Conditions Failure exists as of the applicable Redemption Date.
	 	 	 
	 	C.
    	_________
    Borrower hereby gives notice that an Equity Conditions Failure has occurred and requests a waiver from Lender with respect
    thereto. The Equity Conditions Failure is as follows:


 





 


 


 


 


Exhibit
B to Convertible Promissory Note, Page 1


 




    	 



     


    

 


Please transfer the Redemption Conversion
Shares, if applicable, electronically (via DWAC) to the following account:




 


	Broker:
    ________________________________ 	Address:
    	 
	DTC#:
    ________________________________	 	 
	Account
    #: _____________________________	 	 
	Account
    Name: _________________________	 	 





 


To
the extent the Redemption Conversion Shares are not able to be delivered to Lender electronically via the DWAC system, deliver
all such certificated shares to Lender via reputable overnight courier after receipt of this Redemption Notice (by facsimile transmission
or otherwise) to:


 


_____________________________________


_____________________________________


_____________________________________


 


Sincerely,


 


Lender:


 


Iliad
Research and Trading, L.P.


 


	By:
    	Iliad
    Management, LLC, its General Partner	 
	 	 	 
	By:
    	Fife
    Trading, Inc., its Manager	 
	 	 	 
	By:
    	 	 
	 	John
    M. Fife, President 	 


 


Exhibit
B to Convertible Promissory Note, Page 2